Vr Mapping

ON-LINE REFERENCE DOCUMENTATION

CARDINAL SYSTEMS, LLC

www.cardinalsystems.net

Insert Fly Line (InsFly)

Type: Interactive Application

 

Digitizes a line in fly mode, in which the line is drawn freehand in stream mode. Places the proper number of points on the line as determined by user parameters to make the line smooth. This is useful for digitizing contours, water lines and DTM break lines. A manual mode, which allows points to be digitized manually, may be engaged when in stream digitizing mode.

 

Both the VrOne key layout and the old style key layout are supported. The key layout may be set in Enter Parameters from the Main Menu.

Local Commands

Key-in

Description

Range

LAY=

Layer number

1 – 10001

MOD=

Mode

1 = Line 2 = Spline

GRP=

Graphic pointer

1 – 60

WID=

Width

0 – 255

PEN=

Pen number

1 – 256

CON=

Construction flag

0 – 1

NGR=

Non graphic pointer

32 bit

LNK=

Link number

32 bit

FC=

Feature code

15 characters

DIG=

Digitized point at location specified

X Y Z

FKEY=

Change to function key properties

Function Key Name

TUBRAD=

X,y tube radius

Inches | Mm

MAXDIS=

Maximum tube distance

Inches | Mm

DITDIS=

Dither distance

Inches | Mm

ZTUB=

Z tube radius

Ground value 0 = Disabled

DITBUF=

Maximum dither point buffer size

100-10,000

LAKLIN=

Makes Lake Line in which all the elevations on the line are the same as the first point.

0=Off 1=On

KEYLAY=

Key layout

0=Normal 1=Old style

PARAMETERS

Tube Filter

When filtering lines, two parameters determine which points are kept:

 

InsFlyLine_image002

 

When a data point falls outside the current tube, the last point within the tube is saved and a new tube direction is set based on the new point and the last point. If a line is straight and points do not move out of the tube, the Maximum tube distance is used to save points.

 

When setting these parameters, the Maximum tube distance should always be larger than the Tube radius.

Example:

Tube radius

02 inches or 0.5 mm

Maximum tube distance

0.5 inches or 12 mm

Dither Distance

When collecting a line, all the points are first placed in a buffer. When the line is ended the points are then filtered using the current parameters. The Dither distance specifies how far the floating mark or cursor must travel before a point is placed in the buffer.

Example:

Dither distance:       .05 inches or 1.3 mm

Z Rube Radius

Specifies in ground units the elevation filter to apply to points in the input buffer. If set to 0, no elevation filter is applied.

 

When a line is being collected, points are stored in a temporary buffer using the Dither Distance.  When the line is saved, the points in the buffer are filtered using the Tube Radius, Z Tube Radius and Maximum Distance.  Points that are “Forced” during collection pass through the filter unmodified.

Dither Buffer Size

This parameter defines the maximum number of points that may be stored in the dither buffer.  When this buffer is full, the points are filtered and the resulting line is saved.  If the line is not yet complete input will continue seamlessly.  Setting the dither buffer size to a smaller value will typically produce multiple lines that make up the entire line.  The interactive application Join Lines (JoiLin) or the batch application Batch Join (BatJoi) may be used to join the multiple lines into a single line.  The default value for the dither buffer size is 10,000.

Button Assignments

Ins Fly Line – Main

 

Button

Description

1

Start

Starts the line.

2

Z +

Increments the current elevation by the contour interval.

3

Z -

Decrements the current elevation by the contour interval.

4

Z Round

Rounds the current elevation to the nearest contour interval.

5

 

 

6

 

 

7

Enter Params

Enter parameters from dialog box.

8

 

 

9

 

 

*

 

 

0

Toggle Snap

Toggles snap on/off.

#

End

Ends Edit Line.

The contour interval may be set in Z Source (Zsou).

Ins Fly Line – Stream (VrOne layout)

 

Button

Description

1

Force

Forces a point into the buffer.

2

Close

Closes and saves the current line.

3

Backup

Backs up one point and drives the instrument to that point if possible.

4

End line

Ends and saves the current fly line.

5

Dig manual

Allows manual point digitization.

6

Splice/Pause

Starts Splice menu.

7

 

 

8

 

 

9

 

 

*

 

 

0

Toggle Snap

Starts Snap menu.

#

End

Ends Edit Line.

Ins Fly Line – Stream (Old style layout)

 

Button

Description

1

End line

Ends and saves the current fly line.

2

Close

Closes and saves the current line.

3

Backup

Backs up one point and drives the instrument to that point if possible.

4

Force

Forces a point into the buffer.

5

Dig manual

Allows manual point digitization.

6

Splice/Pause

Starts Splice menu.

7

 

 

8

 

 

9

 

 

*

 

 

0

Toggle Snap

Starts Snap menu.

#

End

Ends Edit Line.

Ins Fly Line – Splice (VrOne layout)

When this menu is entered, point collection stops and the operator may look around. This is often used when pulling contours or break-lines through dense vegetation. Splice may be used to remove the end portion of the line and continue from that point.

 

 

Button

Description

1

Force

Forces a point into the buffer.

2

Resume

Resumes line collection.

3

Splice

Digitizes the splice point. The line from this point to the end of the line will be erased, the instrument will be driven to the closest point on the current line, and digitizing will resume.

4

End line

Ends and saves the line.

5

 

 

6

 

 

7

 

 

8

 

 

9

 

 

*

 

 

0

Toggle Snap

Toggles snap on/off.

#

End

Ends Edit Line.

Ins Fly Line – Splice (Old style layout)

When this menu is entered, point collection stops and the operator may look around. This is often used when pulling contours or break-lines through dense vegetation. Splice may be used to remove the end portion of the line and continue from that point.

 

 

Button

Description

1

Splice

Digitizes the splice point. The line from this point to the end of the line will be erased, the instrument will be driven to the closest point on the current line, and digitizing will resume.

2

Resume

Resumes line collection.

3

End line

Ends and saves the line.

4

Force

Forces a point into the buffer.

5

 

 

6

 

 

7

 

 

8

 

 

9

 

 

*

 

 

0

Toggle Snap

Toggles snap on/off.

#

End

Ends Edit Line.

Ins Fly Line – Snap

This menu will be used if snap is turned on from the Stream menu. It is a modified version of snap that allows snapping and ending a line. Due to the nature of Fly Line, snapping to end a line requires this menu.

 

 

Button

Description

1

Snap and End

Snaps and ends the line.

2

Resume

Resumes line by returning to the Stream menu.

3

 

 

4

 

 

5

 

 

6

 

 

7

 

 

8

 

 

9

 

 

*

 

 

0

 

 

#

 

 

Ins Fly Line – Dig Manual

Points may be digitized manually when button 5 is pressed when in Stream mode.

 

 

Button

Description

1

Dig point

Digitizes a new point.

2

Resume

Resumes stream digitizing.

3

 

 

4

End line

Ends and saves the current line.

5

 

 

6

 

 

7

 

 

8

 

 

9

 

 

*

 

 

0

 

 

#

Resume

Resumes stream digitizing.